A smooth and dynamic piano piece.
I usually do not listen to solo-instrumentation, but this composition sustained my interest. By your description, I can assume that you intended for a somber mood or at the least have that tone toward this work, if premeditation is nonexistent. You established the mood well and perpetuated it effectively. I particularly like your key, chord progression, and dynamics, but what stuck out most was your smooth transitions between melodies. That really held the piece together.
The reverberation occasionally detracts from the quality of this piano composition, but the effect is minimal.
In short, I really like this! Nice work.